MainStreet Bancshares, Inc.
MNSB- Exchange
- Nasdaq
- Industry
- State Commercial Banks
- SEC CIK
- 0001693577
No open-market purchases or sales by MainStreet Bancshares, Inc. insiders were filed in the last 90 days; 96 institutions reported holding it in 13F filings for Q2 2026, worth $99.3M in total; no superinvestor holds it.
Other share classesMNSBP
13F holders, Q1 2026
Institutional positions in MainStreet Bancshares, Inc. as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 84
- +10 vs. Q4 2025
- Shares held
- 4.24M
- −130.8K (−3.0%) vs. Q4 2025
- Total value
- $93.1M
- +$4.12M (+4.6%) vs. Q4 2025
- New holders
- 15
- 25 more added
- Sold out
- 5
- 23 more reduced
1 institution that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting MNSB on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 96 | $99.3M |
| Q1 2026 | 84 | $93.1M |
| Q4 2025 | 75 | $96.7M |
| Q3 2025 | 71 | $95.5M |
| Q2 2025 | 61 | $80.6M |
| Q1 2025 | 51 | $61.9M |
| Q4 2024 | 53 | $68.6M |
| Q3 2024 | 53 | $69.6M |
| Q2 2024 | 66 | $70.5M |
| Q1 2024 | 65 | $78.2M |
| Q4 2023 | 64 | $104.0M |
| Q3 2023 | 63 | $79.1M |
| Q2 2023 | 59 | $85.5M |
| Q1 2023 | 53 | $78.7M |
| Q4 2022 | 53 | $92.5M |
| Q3 2022 | 45 | $74.6M |
| Q2 2022 | 47 | $76.1M |
| Q1 2022 | 46 | $82.8M |
| Q4 2021 | 46 | $84.6M |
| Q3 2021 | 41 | $75.1M |
| Q2 2021 | 45 | $73.3M |
| Q1 2021 | 49 | $74.2M |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding MainStreet Bancshares, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Banc Funds Co LLC | 530,941 | $11.8M | 2.19% | +108,960+25.8% | Added |
| Alliancebernstein L.P. | 554,723 | $11.3M | 0.00% | −130,222−19.0% | Reduced |
| Fourthstone LLC | 384,802 | $8.54M | 1.45% | −382,990−49.9% | Reduced |
| Wellington Management Group LLP | 352,706 | $7.83M | 0.00% | −6,705−1.9% | Reduced |
| BlackRock, Inc. | 347,608 | $7.72M | 0.00% | −2,730−0.8% | Reduced |
| Vanguard Capital Management LLC | 301,487 | $6.69M | 0.00% | +301,487 | New |
| First Manhattan Co | 188,108 | $4.18M | 0.01% | 00.0% | Unchanged |
| Dimensional Fund Advisors LP | 166,633 | $3.70M | 0.00% | +28,282+20.4% | Added |
| Geode Capital Management, LLC | 147,168 | $3.27M | 0.00% | −2,801−1.9% | Reduced |
| Acadian Asset Management LLC | 133,976 | $2.97M | 0.00% | +36,942+38.1% | Added |
| UBS Group AG | 113,178 | $2.51M | 0.00% | −498−0.4% | Reduced |
| Marshall Wace, LLP | 106,225 | $2.36M | 0.00% | +61,938+139.9% | Added |
| State Street Corp | 100,211 | $2.22M | 0.00% | +26,649+36.2% | Added |
| Cresset Asset Management, LLC | 72,000 | $1.60M | 0.01% | −261,136−78.4% | Reduced |
| Bridgeway Capital Management, LLC | 63,776 | $1.42M | 0.03% | +3,034+5.0% | Added |
| American Century Companies Inc | 52,544 | $1.17M | 0.00% | +52,544 | New |
| Squarepoint Ops LLC | 50,874 | $1.13M | 0.00% | +16,450+47.8% | Added |
| Mendon Capital Advisors Corp | 47,312 | $1.05M | 0.41% | 00.0% | Unchanged |
| Northern Trust Corp | 46,935 | $1.04M | 0.00% | −1,553−3.2% | Reduced |
| Vanguard Portfolio Management LLC | 39,661 | $880.5K | 0.00% | +39,661 | New |
| Vanguard Fiduciary Trust Co | 38,951 | $864.7K | 0.00% | +38,951 | New |
| Empowered Funds, LLC | 34,396 | $763.6K | 0.00% | +3,034+9.7% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 33,056 | $733.8K | 0.00% | +6,085+22.6% | Added |
| Morgan Stanley | 24,380 | $541.2K | 0.00% | −2,085−7.9% | Reduced |
| Citadel Advisors LLC | 23,518 | $522.1K | 0.00% | −15,770−40.1% | Reduced |
| ELCO Management Co., LLC | 22,312 | $495.3K | 0.24% | 00.0% | Unchanged |
| Creative Planning | 22,270 | $494.4K | 0.00% | +170+0.8% | Added |
| Daytona Street Capital LLC | 18,000 | $405.0K | 0.33% | 00.0% | Unchanged |
| Charles Schwab Investment Management Inc | 17,801 | $395.2K | 0.00% | −2,764−13.4% | Reduced |
| Trexquant Investment LP | 17,039 | $378.3K | 0.00% | +5,288+45.0% | Added |
| Bank of New York Mellon Corp | 16,826 | $373.5K | 0.00% | −1,213−6.7% | Reduced |
| Barclays PLC | 16,513 | $366.6K | 0.00% | −9,535−36.6% | Reduced |
| Renaissance Technologies LLC | 14,400 | $319.7K | 0.00% | −34,600−70.6% | Reduced |
| HighTower Advisors, LLC | 13,428 | $298.1K | 0.00% | +1,126+9.2% | Added |
| Goldman Sachs Group Inc | 12,827 | $284.8K | 0.00% | +1,463+12.9% | Added |
| Atlantic Union Bankshares Corp | 12,600 | $279.7K | 0.01% | 00.0% | Unchanged |
| XTX Topco Ltd | 10,110 | $224.4K | 0.00% | +10,110 | New |
| Arrowstreet Capital, Limited Partnership | 9,732 | $216.1K | 0.00% | −1,732−15.1% | Reduced |
| Nuveen, LLC | 9,161 | $203.4K | 0.00% | +9,161 | New |
| Caldwell Sutter Capital, Inc. | 8,818 | $195.8K | 0.08% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 6,709 | $148.9K | 0.00% | 00.0% | Unchanged |
| Spire Wealth Management | 6,562 | $145.7K | 0.00% | 00.0% | Unchanged |
| Hughes Financial Services, LLC | 5,440 | $120.8K | 0.02% | 00.0% | Unchanged |
| Rhumbline Advisers | 5,116 | $113.6K | 0.00% | −140−2.7% | Reduced |
| Deutsche Bank AG | 5,026 | $111.6K | 0.00% | 00.0% | Unchanged |
| New York State Common Retirement Fund | 3,484 | $77.3K | 0.00% | 00.0% | Unchanged |
| Mirae Asset Global ETFs Holdings Ltd. | 3,357 | $74.5K | 0.00% | +68+2.1% | Added |
| JPMorgan Chase & Co | 2,875 | $63.4K | 0.00% | −1,906−39.9% | Reduced |
| BNP Paribas Arbitrage, SA | 2,787 | $61.9K | 0.00% | +1,077+63.0% | Added |
| Cassaday & Co Wealth Management LLC | 2,730 | $60.6K | 0.00% | +2,730 | New |
| Wells Fargo & Company | 2,582 | $57.3K | 0.00% | −5,295−67.2% | Reduced |
| Vanguard Global Advisers, LLC | 2,563 | $56.9K | 0.00% | +2,563 | New |
| Police & Firemen's Retirement System of New Jersey | 1,763 | $39.1K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 1,094 | $24.3K | 0.00% | +542+98.2% | Added |
| Steward Partners Investment Advisory, LLC | 1,050 | $23.3K | 0.00% | 00.0% | Unchanged |
| US Bancorp | 1,000 | $22.2K | 0.00% | 00.0% | Unchanged |
| First United Bank Trust | 790 | $17.5K | 0.01% | 00.0% | Unchanged |
| Russell Investments Group, Ltd. | 777 | $17.2K | 0.00% | +110+16.5% | Added |
| Ameritas Investment Partners, Inc. | 718 | $15.9K | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 636 | $14.1K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 550 | $13.0K | 0.00% | −659−54.5% | Reduced |
| State of Alaska, Department of Revenue | 596 | $13.0K | 0.00% | 00.0% | Unchanged |
| Rockefeller Capital Management L.P. | 556 | $12.4K | 0.00% | +3+0.5% | Added |
| Toth Financial Advisory Corp | 542 | $12.0K | 0.00% | +2+0.4% | Added |
| STRS Ohio | 500 | $11.1K | 0.00% | +500 | New |
| FMR LLC | 472 | $10.5K | 0.00% | +14+3.1% | Added |
| Federated Hermes, Inc. | 455 | $10.1K | 0.00% | −292−39.1% | Reduced |
| California State Teachers Retirement System | 381 | $8.46K | 0.00% | −51−11.8% | Reduced |
| Citigroup Inc | 320 | $7.10K | 0.00% | +160+100.0% | Added |
| Sterling Capital Management LLC | 223 | $4.95K | 0.00% | −163−42.2% | Reduced |
| CWM, LLC | 173 | $3.84K | 0.00% | +64+58.7% | Added |
| Farther Finance Advisors, LLC | 94 | $2.11K | 0.00% | 00.0% | Unchanged |
| UBS Asset Management Americas Inc | 88 | $1.95K | 0.00% | +88 | New |
| SBI Securities Co., Ltd. | 83 | $1.84K | 0.00% | 00.0% | Unchanged |
| GAMMA Investing LLC | 29 | $644 | 0.00% | +29 | New |
| The PNC Financial Services Group, Inc. | 26 | $577 | 0.00% | +10+62.5% | Added |
| Allworth Financial LP | 15 | $333 | 0.00% | +15 | New |
| Basecamp Wealth Advisors LLC | 14 | $311 | 0.00% | +14 | New |
| MAI Capital Management | 10 | $222 | 0.00% | +5+100.0% | Added |
| Root Financial Partners, LLC | 7 | $155 | 0.00% | +7 | New |
| Rothschild Investment LLC | 5 | $111 | 0.00% | +4+400.0% | Added |
| Essential Partners LLC | 4 | $89 | 0.00% | 00.0% | Unchanged |
| SRS Capital Advisors, Inc. | 3 | $67 | 0.00% | +3 | New |
| IFP Advisors, Inc | 2 | $44 | 0.00% | −1−33.3% | Reduced |
| Provident Wealth Management, LLC | 0 | $0 | 0.00% | −10,932−100.0% | Sold out |
| Bank of America Corp | 0 | $0 | 0.00% | −8,110−100.0% | Sold out |
| MetLife Investment Management | 0 | $0 | 0.00% | −4,079−100.0% | Sold out |
| Kestra Advisory Services, LLC | 0 | $0 | 0.00% | −1,990−100.0% | Sold out |
| Amalgamated Bank | 0 | $0 | 0.00% | −221−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |